Permutation-lock



Patented June 8, 1920,.

A TTOR/VEYS J. P. GERAGHTY.

PEIRMUTATION LOCK.

APPLICATION FILED APR. 18, 1919 WIN/8858 JOHN P. GERAGHTY, F JERSEY CITY, NEW JERSEY.

PEEMUIATION-LOGK.

ieaaoae.

Application filed April 18, 1919.

To all whom it may concern.-

Be it known that I, JoHN P. GERAGHTY, a citizen of the United States, and a resident of Jersey City, in the county of Hudson and State of New Jersey, have invented a new and Improved Prmutatio11-Lock, of which the following is a full, clear, and eX- act description.

The invention relates to permutation locks such, for instance, as shown and described in the Letters Patent of the United States, No. 898,417, granted to me on September 8, 1908.

The object of the invention is to provide a new and improved permutation look more especially designed for use on railroad car doors, trunks and other devices and receptacles, and arranged to allow ready inspection of the car seal with a view of determining whether the lock has been tampered with or not while the car is in transit. Another object is to render it difficult for unauthorized persons to open the lock.

With these and other objects in view, the invention consists of certain novel features of construction as hereinafter shown and de scribed and then specifically pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate'corresponding parts in all the views.

Figure 1 is .a reduced face view of the look as applied to a car;

Fig. 2 is a face view of the lock with the parts in locked position;

Fig. 3 is a sectional side elevation of the same on the line 33 of Fig. 2;

Fig. 4 is a side elevation of the locking slide;

Fig. 5 is a sectional side elevation of a portion of the lock and showing the looking arm thrown back to permit of applying an ordinary car seal to the lock especially when. a car is empty;

Fig. 6 is an under side view of sundry of the concentric ring tumblers; and

Fig. 7 is a face view of a modified form of the permutation lock arranged for use on a trunk or like device.

The frame or casing 10 of the lock is fastened by bolts 11 or other fastening devices to the outer face of the door 12 of a railroad car 13, as plainly shown in Fig. 1. The casing 10 is provided in its top with an opening 15 into which lit a number of concentric tum- Specification of Letters Patent.

Patented June 8, 1920.

Serial No. 291,028.

blers 16 provided at their bases with proectmg flanges 17, of which one flange extends under a portion of the next adjacent tumbler, and adjacent flanges are spaced apart to provide annular grooves 18 between them for the reception of pins 20 held on a locking slide 21 mounted to slide in the casing 10 directly under the flanges 17 of the tumblers 16. As shown in the drawings, the central tumbler is in the form of a disk while the other tumblers are in the form of concentric rings fitted one on the other. The flange 17 of the outermost tumbler extends into an annular recess 22 formed in the top of the frame 10 to hold the tumblers in place. The under side of each of the tumblers 16 is provided with a radially disposed slot 23 leading to the corresponding annular groove 18 and the said slots 23. are adapted to register with each other and with the pins 20 whenever the tumblers are turned into the correct position according to the combination of letters, numerals or other characters marked on theouter faces of the tumblers. Then the locking slide 21 is locked in place one or more of the slots 23 are out of register with the pins 20 and hence the slide 21 is held against lengthwise movement. When it is desired to unlock the slide 21 it is necessary for the person knowing the combination to turn the tumblers 16 into the proper position so that the slots 23 register with each other and with the pins 20 to allow of moving the slide 21 from the left to the right, that is, from locking into unlocking position.

The outer end 25 of the slide 21 is enlarged and adapted to abut against one side of the frame 10, as plainly shown in Fig. 3, and the top of the said outer end is preferably provided with a notch 26 to form a handheld for conveniently moving the slide from normal locking position, as shown in Figs. 1, 3 and 5, outward into an unlocking position. The inner end 27 of the locking slide 21 is adapted to overlie the free end 28 of an arm 29 mounted to swing on a pivot 30 held on a link 31 pivoted at 32 on a plate 33 fastened by a bolt 34 or other fastening devices to the car door 13, as plainly indicated in Fig. 1. The link 31 normally holds a movable member 35 of the car look and hence holds this member against movement as long as the slide 21 is in looking position relative to the arm 29. The free end 28 of the arm 29 extends into a recess formed in the casing 10 and as long as the locking slide 21 is in looking position it holds the arm 29 locked in place and likewise the link 31. The top of the free end 28 is provided with a recess 11 adapted to hold a seal 12, preferably or other suitable material. The seal 12 is visible through a window 13 held in the free end 28 of the locking slide 21. On the slide 21 at the inner end is arranged a pivotedcutter 44 adapted to cut across the face of the seal 42 when thelocking slide 21 is moved from the left to the right, that is,

when the combination lock is opened, and hence an inspector can readily determine 7 whether the combination lock has been tampered with as then the seal 12 will show a defacing mark produced by the cutter 4.4: on moving the slide 21 into an open position, as

previously explained.

The operation is as follows:

lVhen the door 12 is locked in the car door opening as illustrated in Fig. 1, and it is desired to open the door 12 then the operator'turns the tumblers 16 until they are set to a predetermined combination to bring the fnotches 23 into register with each other and into register with the pins 20, and then the operator moves the slide 21- from the left to the right so as to uncover the free end 28 of the'locking arm 29. The operator now swings this locking arm out of engagement with the recess 10: andthen swings the link gl out of engagement with the lock member 35st the-car door to allow of unlocking the car door and moving the same into an open position. When it is desired to lock the car door 12 in place in the door opening after the door is closed, the operator swings the link 31 over the locking member 35, then swings the arm 29 into engagement with the recess l0, after which the operator moves the slide v21 from the right to the left to lock the arm 29 in place on the frame 10. The operator now turns one or more of the tumblers 16 to close the V combination lock; Prior to moving the slide 21 into closed position, the seal 42 is placed in the recess 411 and when the slide 21' is moved into closed position then the cutter tdrides freely over the face of the seal 4-2 without marring the same, it being understood that the cutter 1 1 finally moves into-a left-hand position relative to the seal 12, as indicated in Fig. 3.

. The left-hand side of the frame, 10 is ireferably provided with a stud adapted to be engaged by an opening 51 formed in the free end of the link 31, and the stud 50 is provided with an opening 52 disposed in the form of a disk of paper above the face of the link to permit of applying an ordinary car seal to the stud at the time the swing arm 29 is in a folded back position 'on top of the link 31, as inclicated in Fig. 5. It is understood that this arrangement is very serviceable for holding the car door locked when a car is empty without using the permutation lock. The swing arm 29 is provided with an aperture 53 engaging the outer end of the stud 50 when the said'locking arm is in closed position and use is made of the permutation look as above explained.

When using the permutation lock on a trunk, for instance, for locking the cover to the body of the trunk then the arm 29 is pivoted at. on a bracket 61, as plainly shown in Fig. '7, it being understood that in this case the frame 10 is attached say to the body of the trunk while the bracket 61 is attached to the cover or vice versa, otherwise the construction and operation is the same as above described so that further description is not deemed necessary.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent 1. A look, comprising a frame fixed on one of the parts to be locked together, the frame having a recess, a locking arm mounted to swing on the other part and adapted to engage with its freeend the said recess, a locking slide mounted to slide on the said frame and adapted to overlie the free end of the said locking arm, a seal carried by said free end of the locking arm, said locking slide having an aperture through which to xiew said seal, and a series of concentric ring tumblers mounted to turn in the: said frame and engaging the said slide to hold the latter against movement when in looking position, the said tumblers" being arranged to register with. each other to allow of moving the slide into unlocking position relative to the said hinged arm.

2. A look, comprising a frame attached to one of the parts to be fastened together, an apertured stud held on the said frame and adapted-to receive and hold a seal, a hasp pivoted on the other part and. having an opening adapted to engagethe said apertured stud with the opening thereon spaced from'the face of the said arm, alocking arm pivoted on the said hasp and having an opening adapted to engage the said stud to cover the latter, and a locking slide mounted to slide on the said frame and en- I JOHN P. GERAGHTY. 

